9th Class Science Sound Question Bank Sound IIT JEE Subjective Problems

  • question_answer
    If the frequency of radio waves is 600 KHz, calculate the wave length of the radio waves. (Velocity of light\[~=\text{3}\times \text{1}{{0}^{\text{8}}}\text{ }{{\text{s}}^{-\text{1}}}\]).

    Answer:

    Given\[n=600KHz=600\times {{10}^{3}}Hz\] \[\lambda =?\] \[v=3\times {{10}^{8}}m{{s}^{1}}.\] We know, \[V=n\lambda \]


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